4 bed, 4 bath, 3,858 sqft on 0.43 acres in Lake Austin. Austin, TX 78731. $4,607,500. Austin ISD.
About This Home
Discover a rare Lake Austin waterfront estate where luxury, privacy, and nature converge in a turnkey retreat designed for exceptional living and effortless entertaining. Set along the quiet, low-traffic Dry Creek inlet, this private sanctuary offers serene waterfront access and easy exploration by boat. The private two-story boathouse features an upper party deck and motorized boat lift, with a boat and custom golf cart included in the sale. At home, resort-style amenities invite relaxed days and memorable gatherings, including a pool and spa, fire pit, private sandy beach, and expansive lawn extending to the water’s edge. The lake-facing primary suite showcases breathtaking views of Lake Austin and Bright Leaf Preserve, complemented by a private balcony. Three additional ensuite bedrooms provide comfort and privacy for family and guests. A rare opportunity to embrace the finest in waterfront living, this exceptional estate is surrounded by nature and fully equipped for a lifestyle that feels like a permanent getaway.
Lake Austin is Austin's most exclusive waterfront corridor - 22 miles of constant-level shoreline in 78732, 15 minutes from downtown. Waterfront homes start around $4M and trophy lots with 200+ feet of flat shoreline trade at $15M-$35M+. The lake is controlled by Tom Miller Dam, which maintains consistent water levels year-round - the key advantage over seasonal Lake Travis.
This is one of Austin's thinnest markets. Roughly 22 miles of total shoreline, and at any given time only 3-5 homes are actively listed. Many of the best lots trade privately through agent relationships before they ever reach the MLS. The finite supply creates a structural price floor that insulates Lake Austin from broader market cycles.
Buyers here want water access as daily life, not a weekend plan. Morning paddleboard, afternoon ski run, burgers at Ski Shores by boat, sunset from your own dock watching Hill Country ridgelines. The practical side matters too: you are inside Austin city limits with full services, 15 minutes from downtown, 10 from the Domain.
Four Seasons Private Residences is under development on 145 acres with 188 planned homes - the first significant new inventory since the lake was established. Eanes ISD and Leander ISD serve different sections of the corridor, both with strong school ratings.
- Property Type
- Residential
- Year Built
- 2001
- Lot Size
- 0.43 acres
- Price / Sq Ft
- $1,194
- HOA
- $160/year
- Garage
- 2 spaces
- Pool
- Yes
Listing information last updated October 28, 2026.
Listed by Kuper Sotheby's Int'l Realty
MLS# 7577932 • Active
IDX inquiries: Keenan Group at Compass · (512) 415-7653
Highlights
Facts & Features
Interior
- Bookcases
- Built-in Features
- Ceiling Fan(s)
- Ceiling-High
- Chandelier
- Granite Counters
- Double Vanity
- Entrance Foyer
- Interior Steps
- Kitchen Island
- Multiple Dining Areas
- Multiple Living Areas
- Smart Thermostat
- Storage
- Study
- Home Office
- Walk-In Closet(s)
- Wired for Sound
- Dishwasher
- Exhaust Fan
- Gas Cooktop
- Microwave
- Oven
- Stainless Steel Appliance(s)
- Carpet
- Tile
- Wood
- Heating
- Central,Natural Gas
- Cooling
- Central Air,Electric
- Fireplaces
- 2
Exterior & Lot
- Balcony
- Boat Dock - Private
- Boat Lift
- Electric Car Plug-in
- Gas Grill
- Outdoor Grill
- Private Yard
- Hardi
- Plank Type
- Stone
- Stucco
- Back Yard
- Curbs
- Few Trees
- Front Yard
- Landscaped
- Sloped Down
- Sprinkler - Automatic
- Views
- Back Yard
- Wrought Iron
- Slab
- Covered
- Deck
- Patio
- Rear Porch
- Roof
- Shingle,Synthetic
- Lot Size
- 0.43 Acres
- Driveway
- Garage
- Garage Door Opener
- Garage Faces Front
- Garage Spaces
- 2
- Pool
- Yes
- Waterfront
Financial
- HOA Fee
- $160 / year
- Original List Price
- $4,850,000
- Price per Sq Ft
- $1,194
Utilities
- Electricity Connected
- Natural Gas Connected
- Sewer Connected
- Water Connected
- Water Source
- Public
- Sewer
- Public Sewer
Transaction History
7 records on file
Every recorded listing, sale, and lease at 5307 Tortuga TRL, whoever represented it.
- ActiveListed 2026Current price: $4,607,500Original list: $4,850,000MLS 7577932
- Listed · July 15, 2026$4,850,000
- Price changed · September 25, 2026$4,670,500
- Price changed · October 2, 2026$4,607,500
- ExpiredListed 2001Current price: $895,000Original list: $895,000MLS 621144
- ExpiredListed 2001Current price: $995,000Original list: $995,000MLS 613883
- ExpiredListed 2001Current price: $995,000Original list: $995,000MLS 607696
- ExpiredListed 2001Current price: $995,000Original list: $995,000MLS 603043
- ExpiredListed 2001Current price: $995,000Original list: $995,000MLS 597520
- ExpiredListed 2001Current price: $1,199,500Original list: $1,199,500MLS 586799
Prices shown are list prices. Closed sale prices are available to registered clients in accordance with ACTRIS rules.
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Price & Listing History
Price Change with current price, original ask, and market time.
- Current list
- $4,607,500
- Original list
- $4,850,000
- Price movement
- $242.5K reduction
- Listed / DOM
- Jul 15, 2026 · 112 days
Tax Record
Public record data from county appraisal records. Market value can differ from assessed value.
- Assessed Value
- $2,620,133
- Assessment Year
- 2025
- Year Built
- 2001
- Parcel ID
- 000000126547
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025+26.3% | — | $2,620,133 | — | — |
2024-10.0% | — | $2,074,827 | $2,513,385 | $327,968 |
2023+10.8% | — | $2,305,332 | $1,306,800 | $768,027 |
2022 | — | $2,081,200 | $1,306,800 | $998,532 |
Virtual Tour
Zoned Schools
McCallum
Lamar
Highland Park
Zoned assignments come from the property school fields available to us. District context schools are shown only when an assigned tier is missing. Contact the school district directly to verify current boundaries and enrollment eligibility.
Excluded from this estimate: property taxes and home insurance. Each requires verified amount, cadence or unit, source, and as-of details.
HOA source: MLS Grid / Unlock MLS, as of 2026-10-28T16:26:03.834+00:00; normalized from annual dues.
Illustrative down payment
20% ($922K)
Adjustable assumption - not a lending recommendation.
Home price
$4,607,500
Loan details
Luxury property intelligence
Keenan Market Position
A sourced read on Lake Austin pricing, timing, and property scale. No automated valuation claim.
List price
$4,607,500
Price per sqft
$1,194/sqft
Vs. Neighborhood guide reference price
-8.8%
$5.1M · Lake Austin neighborhood guide · reference price
Days on market
112 days
Original to current
$242.5K reduction
$4.9M original
Active inventory context
31 listings
Price Position in Lake Austin
Listed 9% below the Lake Austin neighborhood guide reference price. Lake Austin neighborhood guide · reference price.
Source: MLS Grid / Unlock MLS and Keenan Group review as of Oct 28, 2026.
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